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author | Dario Faggioli <raistlin@linux.it> | 2012-07-06 13:17:44 +0100 |
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committer | Dario Faggioli <raistlin@linux.it> | 2012-07-06 13:17:44 +0100 |
commit | 8cea5d337f061c39ec2c639f262becd49dafe361 (patch) | |
tree | 0eeafad91dc3845ed65cb9b656f76fa78addf492 /tools/libxl/libxl_utils.c | |
parent | e9ca00107ce06dfb9c624dab4664724ffeeb74e5 (diff) | |
download | xen-8cea5d337f061c39ec2c639f262becd49dafe361.tar.gz xen-8cea5d337f061c39ec2c639f262becd49dafe361.tar.bz2 xen-8cea5d337f061c39ec2c639f262becd49dafe361.zip |
libxl: introduce some node map helpers
To allow for allocating a node specific libxl_bitmap (as it
is for cpu number and maps). Helper unctions to convert a node
map it its coresponding cpu map and vice versa are also
implemented.
Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'tools/libxl/libxl_utils.c')
-rw-r--r-- | tools/libxl/libxl_utils.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tools/libxl/libxl_utils.c b/tools/libxl/libxl_utils.c index 1bda3cae6c..f7b44a0ee4 100644 --- a/tools/libxl/libxl_utils.c +++ b/tools/libxl/libxl_utils.c @@ -588,6 +588,50 @@ char *libxl_bitmap_to_hex_string(libxl_ctx *ctx, const libxl_bitmap *bitmap) return q; } +int libxl_nodemap_to_cpumap(libxl_ctx *ctx, + const libxl_bitmap *nodemap, + libxl_bitmap *cpumap) +{ + libxl_cputopology *tinfo = NULL; + int nr_cpus, i, rc = 0; + + tinfo = libxl_get_cpu_topology(ctx, &nr_cpus); + if (tinfo == NULL) { + rc = ERROR_FAIL; + goto out; + } + + libxl_bitmap_set_none(cpumap); + for (i = 0; i < nr_cpus; i++) { + if (libxl_bitmap_test(nodemap, tinfo[i].node)) + libxl_bitmap_set(cpumap, i); + } + out: + libxl_cputopology_list_free(tinfo, nr_cpus); + return rc; +} + +int libxl_cpumap_to_nodemap(libxl_ctx *ctx, + const libxl_bitmap *cpumap, + libxl_bitmap *nodemap) +{ + libxl_cputopology *tinfo = NULL; + int nr_cpus, i, rc = 0; + + tinfo = libxl_get_cpu_topology(ctx, &nr_cpus); + if (tinfo == NULL) { + rc = ERROR_FAIL; + goto out; + } + + libxl_bitmap_set_none(nodemap); + libxl_for_each_set_bit(i, *cpumap) + libxl_bitmap_set(nodemap, tinfo[i].node); + out: + libxl_cputopology_list_free(tinfo, nr_cpus); + return rc; +} + int libxl_get_max_cpus(libxl_ctx *ctx) { return xc_get_max_cpus(ctx->xch); |